<em>const userAgent</em> = <q>window.navigator</q>.<b>userAgent</b> 
<s>Google Chrome</s> 	= '<u>Mozilla/5.0 (Windows NT 10.0; Win64; x64) <s>AppleWebKit</s>/537.36 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) <b>Chrome</b>/81.0.4044.122 <i style='color:#FF00FF'>Safari</i>/537.36</u>'
<s>Firefox</s> 			= '<u>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) <i style='color:#CC9900'>Gecko</i>/20100101 <i>Firefox</i>/76.0</u>'
<s>360</s> 				= '<u>Mozilla/5.0 (Windows NT 10.0; WOW64) <s>AppleWebKit</s>/537.36 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) <b>Chrome</b>/78.0.3904.108 <i style='color:#FF00FF'>Safari</i>//537.36</u>'
<s>qq</s> 				= '<u>Mozilla/5.0 (Windows NT 10.0; WOW64) <s>AppleWebKit</s>/537.36 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) <b>Chrome</b>/70.0.3538.25 <i style='color:#FF00FF'>Safari</i>//537.36 Core/1.70.3756.400 QQBrowser/10.5.4039.400</u>'
<em># IE 浏览器</em>
<s>ie11</s> 			= '<u>Mozilla/5.0 (Windows NT 10.0; WOW64; <q>Trident</q>/7.0; .NET4.0C; .NET4.0E; InfoPath.2; <i>rv:11.0</i>) like <i style='color:#CC9900'>Gecko</i></u>'
<s>ie10</s> 			= '<u>Mozilla/5.0 (compatible; <i>MSIE 10.0</i>; Windows NT 10.0; WOW64; <q>Trident</q>/7.0; .NET4.0C; .NET4.0E; InfoPath.2)</u>'
<s>ie9</s> 				= '<u>Mozilla/5.0 (compatible; <i>MSIE 9.0</i>; Windows NT 10.0; WOW64; <q>Trident</q>/7.0; .NET4.0C; .NET4.0E; InfoPath.2)</u>'
<s>ie8</s> 				= '<u>Mozilla/4.0 (compatible; <i>MSIE 8.0</i>; Windows NT 10.0; WOW64; <q>Trident</q>/7.0; .NET4.0C; .NET4.0E; InfoPath.2)</u>'
<s>ie7</s> 				= '<u>Mozilla/4.0 (compatible; <i>MSIE 7.0</i>; Windows NT 10.0; WOW64; <q>Trident</q>/7.0; .NET4.0C; .NET4.0E; InfoPath.2)</u>'
<em># 移动端</em>
<s>iPhone</s> 			= '<u>Mozilla/5.0 (<i>iPhone</i>; CPU iPhone OS 10_3_1 like <i>Mac OS X</i>) <s>AppleWebKit</s>/603.1.30 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) Version/10.0 <q>Mobile</q>/14E304 <i style='color:#FF00FF'>Safari</i>//602.1</u>'
<s>iPad</s> 			= '<u>Mozilla/5.0 (<i>iPad</i>; CPU OS 11_0 like <i>Mac OS X</i>) <s>AppleWebKit</s>/604.1.34 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) Version/11.0 <q>Mobile</q>/15A5341f <i style='color:#FF00FF'>Safari</i>//604.1</u>'
<s>Android</s> 			= '<u>Mozilla/5.0 (<i>Linux</i>; <i>Android</i> 8.0.0; Pixel 2 XL Build/OPD1.170816.004) <s>AppleWebKit</s>/537.36 (<i style='color:#00CC33'>KHTML</i>, like <i style='color:#CC9900'>Gecko</i>) <b>Chrome</b>/81.0.4044.122 <q>Mobile</q> <i style='color:#FF00FF'>Safari</i>//537.36</u>'